59. Renovations in the 90's required that the original Tennessee marble quarry be reopened to build a staircase on the east side of the concourse that would match that on the west side.

60. This replaced a baggage room where travelers could store their luggage for 50 cents as of 1986.

61. Holden Caulfield kept his bags in one in Catcher in the Rye: “So what I did, I told the driver to take me to Grand Central Station. It was right near the Biltmore, where I was meeting Sally later, and I figured what I'd do, I'd check my bags in one of those strong boxes that they give you a key to, then get some breakfast.”

62. Croatian nationalists planted a bomb in one of the lockers on Sept. 11, 1976. It was improperly disarmed, resulting in the death of an NYPD officer and 30 injuries.

63. In 1986, the MTA removed all lockers from Grand Central to reduce the risk of bombs.

64. As The New York Times wrote, however, “advocates for the homeless said… that they believed the lockers were being removed to discourage the homeless, not the lawless.”

65. In the late 80’s and early 90’s, one NYPD sergeant’s beat was the tunnels of GCT.

66. His sole assignment: to manage the homeless population there.

67. Commercial billboards, once iconic, have also disappeared from the main concourse since the 80s, including a Kodak Colorama display, a mainstay for 40 years.

68. Also: a Newsweek clock, whose face read “Nobody gets you into the news like Newsweek.”

69. A large American flag has hung in the main concourse since several days after the attacks of 9/11.

70. Mary Chapin Carpenter wrote the song “Grand Central Station” after 9/11. It’s based on an iron worker from Ground Zero who would bring any and all souls to the terminal after each shift.

71. Thirteen years after his famous 1974 tightrope walk between the Twin Towers, Philippe Petit danced across a wire stretched over GCT's main concourse.

72. The departure display board in the concourse was originally a row of flip panels that would update mechanically.

73. It was later replaced with LCD screens.

74. The departures are always listed as one minute earlier than their actual time.

75. This gives commuters running from the subway an extra blessed 60 seconds to reach their platforms.

76. Attached to the terminal is the 42nd St. station of the New York City subway.

77. This platform used to be part of the Interborough Rapid Transit, or IRT.

78. So many of the conductors were Irish immigrants that the IRT was colloquially called the “Irish Rapid Transit.”

79. The station is now serviced by the 4, 5, 6, and 7 trains, as well as the shuttle to Times Square.

82. It was founded by an artists' collective that included John Singer Sargent, Walter Leighton Clark, and Edmund Greacen.

83. A year later, they founded the Grand Central School of Art.

84. At its peak, it enrolled 900 students.

85. The school closed in 1944.

86. In 1958, the Galleries moved to the Biltmore Hotel.

87. For the centennial, the New York Transit Museum will present a multimedia exhibit "revealing how the iconic building, on the verge of changing the way New Yorkers travel over the next decade, shaped modern New York and determines its future."

88. The museum's 11th Annual Holiday Train Show is currently on display.

89. A television series, Mama, was broadcast from a studio above The Oyster Bar beginning in 1949.

90. Movies and TV shows have regularly featured Grand Central scenes over the decades, from North by Northwest...

91. To Mad Men’s Pete Campbell, who complains in 1967 that commuting from GCT to Cos Cob is like “an epic poem,” the trip took about an hour and cost less than three dollars.

92. Now it takes 45 minutes and costs 12 dollars.

93. In 1978’s Superman, Lex Luther’s lair is located under the terminal.

100. “In Grand Central you cannot shilly shally or dilly dally. Everyone rushes and dashes and zips and zaps and whizzes like crazy and oh what a dizzy and delightful place.” Parting words from Maira Kalman’s children’s book Next Stop Grand Central.